Seasonal Distribution of Some Epipelagic Fishes in the Gulf of Alaska Region

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Abstract
Distribution of various species of fishes in the Gulf of Alaska region in early, middle and late summer of 1956 and 1957, as determined by fishing with surface gillnets, is plotted.The surface area occupied by steelhead and by four species of Pacific salmon is considerably reduced during the progress of the season. There is a large northward shift of the northern limits of distribution of pomfret, blue shark, jack mackerel and albacore during the same period. There is no obvious seasonal change in the distribution of the salmon shark.Seasonal changes in range of occurrence conform with temperature changes in the surface waters and are more extensive in the eastern part of the Gulf.

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